- 07 Nov, 2019 32 commits
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Andrew Lunn authored
mv88e6xxx_g2_atu_stats_get() takes two parameters. Make the stub function also take two, otherwise we get compile errors. Fixes: c5f299d5 ("net: dsa: mv88e6xxx: global1_atu: Add helper for get next") Signed-off-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
David S. Miller <davem@davemloft.net>
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David S. Miller authored
Michael Walle says: ==================== net: phy: at803x device tree binding Adds a device tree binding to configure the clock and the RGMII voltage. Changes since v1: - rebased to latest net-next - renamed "Atheros" to "Qualcomm Atheros" - add a new patch to remove config_init() from AR9331 Changes since the RFC: - renamed the Kconfig entry to "Qualcomm Atheros.." and reordered the item - renamed the prefix from atheros to qca - use the correct name AR803x (instead of AT803x) in new files and dt-bindings. - listed the PHY maintainers in the new schema. Hopefully, thats ok. - fixed a typo in the bindings schema - run dtb_checks and dt_binding_check and fixed the schema - dropped the rgmii-io-1v8 property; instead provide two regulators vddh and vddio, add one consumer vddio-supply - fix the clock settings for the AR8030/AR8035 - only the AR8031 supports chaning the LDO and the PLL mode in software. Check if we have the correct PHY. - new patch to mention the AR8033 which is the same as the AR8031 just without PTP support - new patch which corrects any displayed PHY names and comments. Be consistent. ==================== Signed-off-by: -
Michael Walle authored
According to its datasheet, the internal PHY doesn't have debug registers nor MMDs. Since config_init() only configures delays and clocks and so on in these registers it won't be needed on this PHY. Remove it. Signed-off-by:
Michael Walle <michael@walle.cc> Reviewed-by:
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Michael Walle authored
Fix at least the displayed strings. The actual name of the chip is AR803x. Signed-off-by:
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Michael Walle authored
The AR8033 is the AR8031 without PTP support. All other registers are the same. Unfortunately, they share the same PHY ID. Therefore, we cannot distinguish between the one with PTP support and the one without. Signed-off-by:
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Michael Walle authored
Add support for configuring the CLK_25M pin as well as the RGMII I/O voltage by the device tree. Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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Michael Walle authored
Document the Atheros AR803x PHY bindings. Signed-off-by:
Rob Herring <robh@kernel.org> Reviewed-by:
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Michael Walle authored
The name of the PHY is actually AR803x not AT803x. Additionally, add the name of the vendor and mention the AR8031 support. Signed-off-by:
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Eric Dumazet authored
Reading tp->recvmsg_inq after socket lock is released raises a KCSAN warning [1] Replace has_tss & has_cmsg by cmsg_flags and make sure to not read tp->recvmsg_inq a second time. [1] BUG: KCSAN: data-race in tcp_chrono_stop / tcp_recvmsg write to 0xffff888126adef24 of 2 bytes by interrupt on cpu 0: tcp_chrono_set net/ipv4/tcp_output.c:2309 [inline] tcp_chrono_stop+0x14c/0x280 net/ipv4/tcp_output.c:2338 tcp_clean_rtx_queue net/ipv4/tcp_input.c:3165 [inline] tcp_ack+0x274f/0x3170 net/ipv4/tcp_input.c:3688 tcp_rcv_established+0x37e/0xf50 net/ipv4/tcp_input.c:5696 tcp_v4_do_rcv+0x381/0x4e0 net/ipv4/tcp_ipv4.c:1561 tcp_v4_rcv+0x19dc/0x1bb0 net/ipv4/tcp_ipv4.c:1942 ip_protocol_deliver_rcu+0x4d/0x420 net/ipv4/ip_input.c:204 ip_local_deliver_finish+0x110/0x140 net/ipv4/ip_input.c:231 NF_HOOK include/linux/netfilter.h:305 [inline] NF_HOOK include/linux/netfilter.h:299 [inline] ip_local_deliver+0x133/0x210 net/ipv4/ip_input.c:252 dst_input include/net/dst.h:442 [inline] ip_rcv_finish+0x121/0x160 net/ipv4/ip_input.c:413 NF_HOOK include/linux/netfilter.h:305 [inline] NF_HOOK include/linux/netfilter.h:299 [inline] ip_rcv+0x18f/0x1a0 net/ipv4/ip_input.c:523 __netif_receive_skb_one_core+0xa7/0xe0 net/core/dev.c:5010 __netif_receive_skb+0x37/0xf0 net/core/dev.c:5124 netif_receive_skb_internal+0x59/0x190 net/core/dev.c:5214 napi_skb_finish net/core/dev.c:5677 [inline] napi_gro_receive+0x28f/0x330 net/core/dev.c:5710 read to 0xffff888126adef25 of 1 bytes by task 7275 on cpu 1: tcp_recvmsg+0x77b/0x1a30 net/ipv4/tcp.c:2187 inet_recvmsg+0xbb/0x250 net/ipv4/af_inet.c:838 sock_recvmsg_nosec net/socket.c:871 [inline] sock_recvmsg net/socket.c:889 [inline] sock_recvmsg+0x92/0xb0 net/socket.c:885 sock_read_iter+0x15f/0x1e0 net/socket.c:967 call_read_iter include/linux/fs.h:1889 [inline] new_sync_read+0x389/0x4f0 fs/read_write.c:414 __vfs_read+0xb1/0xc0 fs/read_write.c:427 vfs_read fs/read_write.c:461 [inline] vfs_read+0x143/0x2c0 fs/read_write.c:446 ksys_read+0xd5/0x1b0 fs/read_write.c:587 __do_sys_read fs/read_write.c:597 [inline] __se_sys_read fs/read_write.c:595 [inline] __x64_sys_read+0x4c/0x60 fs/read_write.c:595 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 7275 Comm: sshd Not tainted 5.4.0-rc3+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Fixes: b75eba76 ("tcp: send in-queue bytes in cmsg upon read") Signed-off-by:
Eric Dumazet <edumazet@google.com> Acked-by:
Soheil Hassas Yeganeh <soheil@google.com> Reported-by:
syzbot <syzkaller@googlegroups.com> Signed-off-by:
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Eric Dumazet authored
sk->sk_backlog.tail might be read without holding the socket spinlock, we need to add proper READ_ONCE()/WRITE_ONCE() to silence the warnings. KCSAN reported : BUG: KCSAN: data-race in tcp_add_backlog / tcp_recvmsg write to 0xffff8881265109f8 of 8 bytes by interrupt on cpu 1: __sk_add_backlog include/net/sock.h:907 [inline] sk_add_backlog include/net/sock.h:938 [inline] tcp_add_backlog+0x476/0xce0 net/ipv4/tcp_ipv4.c:1759 tcp_v4_rcv+0x1a70/0x1bd0 net/ipv4/tcp_ipv4.c:1947 ip_protocol_deliver_rcu+0x4d/0x420 net/ipv4/ip_input.c:204 ip_local_deliver_finish+0x110/0x140 net/ipv4/ip_input.c:231 NF_HOOK include/linux/netfilter.h:305 [inline] NF_HOOK include/linux/netfilter.h:299 [inline] ip_local_deliver+0x133/0x210 net/ipv4/ip_input.c:252 dst_input include/net/dst.h:442 [inline] ip_rcv_finish+0x121/0x160 net/ipv4/ip_input.c:413 NF_HOOK include/linux/netfilter.h:305 [inline] NF_HOOK include/linux/netfilter.h:299 [inline] ip_rcv+0x18f/0x1a0 net/ipv4/ip_input.c:523 __netif_receive_skb_one_core+0xa7/0xe0 net/core/dev.c:4929 __netif_receive_skb+0x37/0xf0 net/core/dev.c:5043 netif_receive_skb_internal+0x59/0x190 net/core/dev.c:5133 napi_skb_finish net/core/dev.c:5596 [inline] napi_gro_receive+0x28f/0x330 net/core/dev.c:5629 receive_buf+0x284/0x30b0 drivers/net/virtio_net.c:1061 virtnet_receive drivers/net/virtio_net.c:1323 [inline] virtnet_poll+0x436/0x7d0 drivers/net/virtio_net.c:1428 napi_poll net/core/dev.c:6311 [inline] net_rx_action+0x3ae/0xa90 net/core/dev.c:6379 __do_softirq+0x115/0x33f kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0xbb/0xe0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] do_IRQ+0xa6/0x180 arch/x86/kernel/irq.c:263 ret_from_intr+0x0/0x19 native_safe_halt+0xe/0x10 arch/x86/kernel/paravirt.c:71 arch_cpu_idle+0x1f/0x30 arch/x86/kernel/process.c:571 default_idle_call+0x1e/0x40 kernel/sched/idle.c:94 cpuidle_idle_call kernel/sched/idle.c:154 [inline] do_idle+0x1af/0x280 kernel/sched/idle.c:263 cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:355 start_secondary+0x208/0x260 arch/x86/kernel/smpboot.c:264 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241 read to 0xffff8881265109f8 of 8 bytes by task 8057 on cpu 0: tcp_recvmsg+0x46e/0x1b40 net/ipv4/tcp.c:2050 inet_recvmsg+0xbb/0x250 net/ipv4/af_inet.c:838 sock_recvmsg_nosec net/socket.c:871 [inline] sock_recvmsg net/socket.c:889 [inline] sock_recvmsg+0x92/0xb0 net/socket.c:885 sock_read_iter+0x15f/0x1e0 net/socket.c:967 call_read_iter include/linux/fs.h:1889 [inline] new_sync_read+0x389/0x4f0 fs/read_write.c:414 __vfs_read+0xb1/0xc0 fs/read_write.c:427 vfs_read fs/read_write.c:461 [inline] vfs_read+0x143/0x2c0 fs/read_write.c:446 ksys_read+0xd5/0x1b0 fs/read_write.c:587 __do_sys_read fs/read_write.c:597 [inline] __se_sys_read fs/read_write.c:595 [inline] __x64_sys_read+0x4c/0x60 fs/read_write.c:595 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 8057 Comm: syz-fuzzer Not tainted 5.4.0-rc6+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Signed-off-by:
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Ioana Ciornei authored
Convert the phy_mode() function to return the if_mode through an argument, similar to the new form of of_get_phy_mode(). This will help with handling errors in a common manner and also will fix an always true condition. Fixes: 0c65b2b9 ("net: of_get_phy_mode: Change API to solve int/unit warnings") Reported-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by:
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Tonghao Zhang authored
The commit 69c51582ff786 ("dpif-netlink: don't allocate per thread netlink sockets"), in Open vSwitch ovs-vswitchd, has changed the number of allocated sockets to just one per port by moving the socket array from a per handler structure to a per datapath one. In the kernel datapath, a vport will have only one socket in most case, if so select it directly in fast-path. Signed-off-by:Tonghao Zhang <xiangxia.m.yue@gmail.com> Acked-by:
Pravin B Shelar <pshelar@ovn.org> Signed-off-by:
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Wei Yongjun authored
In the DMA memory resource get failed case, the error is not set and 0 will be returned. Fix it by removing redundant check since devm_ioremap_resource() will handle it. Fixes: 28ef9ebd ("net: axienet: make use of axistream-connected attribute optional") Signed-off-by:
Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by:
Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com> Signed-off-by:
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Wei Yongjun authored
Function ptp_clock_register() returns ERR_PTR() and never returns NULL. The NULL test should be removed. Signed-off-by:
Igor Russkikh <irusskikh@marvell.com> Signed-off-by:
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Wei Yongjun authored
Add the missing unlock before return from function idtcm_probe() in the error handling case. Fixes: 3a6ba7dc ("ptp: Add a ptp clock driver for IDT ClockMatrix.") Signed-off-by:
Vincent Cheng <vincent.cheng.xh@renesas.com> Signed-off-by:
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Tuong Lien authored
When preparing tunnel packets for the link failover or synchronization, as for the safe algorithm, we added a dummy packet on the pair link but never sent it out. In the case of failover, the pair link will be reset anyway. But for link synching, it will always result in retransmission of the dummy packet after that. We have also observed that such the retransmission at the early stage when a new node comes in a large cluster will take some time and hard to be done, leading to the repeated retransmit failures and the link is reset. Since in commit 4929a932 ("tipc: optimize link synching mechanism") we have already built a dummy 'TUNNEL_PROTOCOL' message on the new link for the synchronization, there's no need for the dummy on the pair one, this commit will skip it when the new mechanism takes in place. In case nothing exists in the pair link's transmq, the link synching will just start and stop shortly on the peer side. The patch is backward compatible. Acked-by:
Jon Maloy <jon.maloy@ericsson.com> Tested-by:
Hoang Le <hoang.h.le@dektech.com.au> Signed-off-by:
Tuong Lien <tuong.t.lien@dektech.com.au> Signed-off-by:
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David S. Miller authored
Xin Long says: ==================== lwtunnel: add ip and ip6 options setting and dumping With this patchset, users can configure options by ip route encap for geneve, vxlan and ersapn lwtunnel, like: # ip r a 1.1.1.0/24 encap ip id 1 geneve class 0 type 0 \ data "1212121234567890" dst 10.1.0.2 dev geneve1 # ip r a 1.1.1.0/24 encap ip id 1 vxlan gbp 456 \ dst 10.1.0.2 dev erspan1 # ip r a 1.1.1.0/24 encap ip id 1 erspan ver 1 idx 123 \ dst 10.1.0.2 dev erspan1 iproute side patch is attached on the reply of this mail. ==================== Signed-off-by: -
Xin Long authored
Based on the code framework built on the last patch, to support setting and dumping for vxlan, we only need to add ip_tun_parse_opts_erspan() for .build_state and ip_tun_fill_encap_opts_erspan() for .fill_encap and if (tun_flags & TUNNEL_ERSPAN_OPT) for .get_encap_size. Signed-off-by:
Xin Long <lucien.xin@gmail.com> Signed-off-by:
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Xin Long authored
Based on the code framework built on the last patch, to support setting and dumping for vxlan, we only need to add ip_tun_parse_opts_vxlan() for .build_state and ip_tun_fill_encap_opts_vxlan() for .fill_encap and if (tun_flags & TUNNEL_VXLAN_OPT) for .get_encap_size. Signed-off-by:
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Xin Long authored
To add options setting and dumping, .build_state(), .fill_encap() and .get_encap_size() in ip_tun_lwt_ops needs to be extended: ip_tun_build_state(): ip_tun_parse_opts(): ip_tun_parse_opts_geneve() ip_tun_fill_encap_info(): ip_tun_fill_encap_opts(): ip_tun_fill_encap_opts_geneve() ip_tun_encap_nlsize() ip_tun_opts_nlsize(): if (tun_flags & TUNNEL_GENEVE_OPT) ip_tun_parse_opts(), ip_tun_fill_encap_opts() and ip_tun_opts_nlsize() processes LWTUNNEL_IP_OPTS. ip_tun_parse_opts_geneve(), ip_tun_fill_encap_opts_geneve() and if (tun_flags & TUNNEL_GENEVE_OPT) processes LWTUNNEL_IP_OPTS_GENEVE. Signed-off-by: -
Xin Long authored
When comparing two tun_info, dst_cache member should have been skipped, as dst_cache is a per cpu pointer and they are always different values even in two tun_info with the same keys. So this patch is to skip dst_cache member and compare the key, mode and options_len only. For the future opts setting support, also to compare options. Fixes: 2d798499 ("lwtunnel: ip tunnel: fix multiple routes with different encap") Signed-off-by:
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Xin Long authored
Without options copied to the dst tun_info in iptunnel_metadata_reply() called by arp_process for handling arp_request, the generated arp_reply packet may be dropped or sent out with wrong options for some tunnels like erspan and vxlan, and the traffic will break. Fixes: 63d008a4 ("ipv4: send arp replies to the correct tunnel") Signed-off-by:
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Hoang Le authored
With huge cluster (e.g >200nodes), the amount of that flow: gap -> retransmit packet -> acked will take time in case of STATE_MSG dropped/delayed because a lot of traffic. This lead to 1.5 sec tolerance value criteria made link easy failure around 2nd, 3rd of failed retransmission attempts. Instead of re-introduced criteria of 99 faled retransmissions to fix the issue, we increase failure detection timer to ten times tolerance value. Fixes: 77cf8edb ("tipc: simplify stale link failure criteria") Acked-by:
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Hoang Le authored
There are two improvements when re-calculate cluster capabilities: - When deleting a specific down node, need to re-calculate. - In tipc_node_cleanup(), do not need to re-calculate if node is still existing in cluster. Acked-by:
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Francesco Ruggeri authored
Added the following traceroute tests. IPV6: Verify that in this scenario ------------------------ N2 | | ------ ------ N3 ---- | R1 | | R2 |------|H2| ------ ------ ---- | | ------------------------ N1 | ---- |H1| ---- where H1's default route goes through R1 and R1's default route goes through R2 over N2, traceroute6 from H1 to H2 reports R2's address on N2 and not N1. IPV4: Verify that traceroute from H1 to H2 shows 1.0.1.1 in this scenario 1.0.3.1/24 ---- 1.0.1.3/24 1.0.1.1/24 ---- 1.0.2.1/24 1.0.2.4/24 ---- |H1|--------------------------|R1|--------------------------|H2| ---- N1 ---- N2 ---- where net.ipv4.icmp_errors_use_inbound_ifaddr is set on R1 and 1.0.3.1/24 and 1.0.1.1/24 are respectively R1's primary and secondary address on N1. v2: fixed some typos, and have bridge in R1 instead of R2 in IPV6 test. Signed-off-by:Francesco Ruggeri <fruggeri@arista.com> Reviewed-by:
David Ahern <dsahern@gmail.com> Signed-off-by:
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David S. Miller authored
Eric Dumazet says: ==================== net: various KCSAN inspired fixes This is a series of minor fixes, mostly dealing with lockless accesses to socket 'sk_ack_backlog', 'sk_max_ack_backlog' ane neighbour 'confirmed' fields. ==================== Signed-off-by: -
Eric Dumazet authored
sk->sk_max_ack_backlog can be read without any lock being held at least in TCP/DCCP cases. We need to use READ_ONCE()/WRITE_ONCE() to avoid load/store tearing and/or potential KCSAN warnings. Signed-off-by:
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Eric Dumazet authored
sk->sk_ack_backlog can be read without any lock being held. We need to use READ_ONCE()/WRITE_ONCE() to avoid load/store tearing and/or potential KCSAN warnings. Signed-off-by:
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Eric Dumazet authored
Writers are holding a lock, but many readers do not. Following patch will add appropriate barriers in sk_acceptq_removed() and sk_acceptq_added(). Signed-off-by:
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Eric Dumazet authored
There are common instances of the following construct : if (n->confirmed != now) n->confirmed = now; A C compiler could legally remove the conditional. Use READ_ONCE()/WRITE_ONCE() to avoid this problem. Signed-off-by:
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Eric Dumazet authored
Use jiffies_delta_to_msecs() to avoid reporting 'infinite' timeouts and to cleanup code. Signed-off-by:
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Eric Dumazet authored
A difference of two unsigned long needs long storage. Fixes: c7fb64db ("[NETLINK]: Neighbour table configuration and statistics via rtnetlink") Signed-off-by:
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- 06 Nov, 2019 8 commits
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Roman Mashak authored
Added tests for u8/u32 clear value, u8/16 retain value, u16/32 invert value, u8/u16/u32 preserve value and test for negative offsets. Signed-off-by:
Roman Mashak <mrv@mojatatu.com> Signed-off-by:
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Jakub Kicinski authored
The netdevsim object is reused by all the tests, but the resource tests puts it into a broken state (failed reload in a different namespace). Make sure it's fixed up at the end of that test otherwise subsequent tests fail. Fixes: b74c37fd ("selftests: netdevsim: add tests for devlink reload with resources") Signed-off-by:
Jakub Kicinski <jakub.kicinski@netronome.com> Acked-by:
Jiri Pirko <jiri@mellanox.com> Signed-off-by:
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Claudiu Manoil authored
Until now the size of a Rx buffer was artificially limited to 1536B (which happens to be the default, after reset, hardware value for a Rx buffer). This approach however leaves unused memory space for Rx packets, since the driver uses a paged allocation scheme that reserves half a page for each Rx skb. There's also the inconvenience that frames around 1536 bytes can get scattered if the limit is slightly exceeded. This limit can be exceeded even for standard MTU of 1500B traffic, for common cases like stacked VLANs, or DSA tags. To address these issues, let's just compute the buffer size starting from the upper limit of 2KB (half a page) and subtract the skb overhead and alignment restrictions. Signed-off-by:
Claudiu Manoil <claudiu.manoil@nxp.com> Signed-off-by:
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Yunfeng Ye authored
The function page_shift() is supported after the commit 94ad9338 ("mm: introduce page_shift()"). So replace with page_shift() in ehea_is_hugepage() for readability. Signed-off-by:
Yunfeng Ye <yeyunfeng@huawei.com> Signed-off-by:
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Zhu Yanjun authored
This change adds support for xmit_more based on the igb commit 6f19e12f ("igb: flush when in xmit_more mode and under descriptor pressure") and commit 6b16f9ee ("net: move skb->xmit_more hint to softnet data") that were made to igb to support this feature. The function netif_xmit_stopped is called to check whether transmit queue on device is currently unable to send to determine whether we must write the tail because we can add no further buffers. When normal packets and/or xmit_more packets fill up tx_desc, it is necessary to trigger NIC tx reg. Following the advice from David Miller and Jakub Kicinski, after the xmit_more feature is added, the following scenario will occur. | xmit_more packets | DMA_MAPPING | DMA_MAPPING error check | xmit_more packets already in HW xmit queue | In the above scenario, if DMA_MAPPING error occurrs, the xmit_more packets already in HW xmit queue will also be dropped. This is different from the behavior before xmit_more feature. So it is necessary to trigger NIC HW tx reg in the above scenario. To the non-xmit_more packets, the above scenario will not occur. Tested: - pktgen (xmit_more packets) SMP x86_64 -> Test command: ./pktgen_sample03_burst_single_flow.sh ... -b 8 -n 1000000 Test results: Params: ... burst: 8 ... Result: OK: 12194004(c12188996+d5007) usec, 1000001 (1500byte,0frags) 82007pps 984Mb/sec (984084000bps) errors: 0 - iperf (normal packets) SMP x86_64 -> Test command: Server: iperf -s Client: iperf -c serverip Result: TCP window size: 85.0 KByte (default) ------------------------------------------------------------ [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 1.10 GBytes 942 Mbits/sec CC: Joe Jin <joe.jin@oracle.com> CC: JUNXIAO_BI <junxiao.bi@oracle.com> Reported-and-tested-by:
Nan san <nan.1986san@gmail.com> Signed-off-by:
Zhu Yanjun <yanjun.zhu@oracle.com> Acked-by:
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David S. Miller authored
Jakub Kicinski says: ==================== netdevsim: fix tests and netdevsim The first patch fixes a merge which brought back some dead code. Next a tiny re-write of the main test using netdevsim aims to ease debugging. ==================== Signed-off-by: -
Jakub Kicinski authored
Recent changes to netdevsim moved creating and destroying devices from netlink to sysfs. The sysfs writes have been implemented as direct writes, without shelling out. This is faster, but leaves no trace in the logs. Add explicit logs to make debugging possible. Signed-off-by:
Daniel Borkmann <daniel@iogearbox.net> Signed-off-by:
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Jakub Kicinski authored
Looks like the port adding loop makes a re-appearance on net-next after net was merged back into it (even though it doesn't feature in the merge diff). The ports are already added in nsim_dev_create() so when we try to add them again get EEXIST, and see: netdevsim: probe of netdevsim0 failed with error -17 in the logs. When we remove the loop again the nsim_dev_probe() and nsim_dev_remove() become a wrapper of nsim_dev_create() and nsim_dev_destroy(). Remove this layer of indirection. Fixes: d31e9558 ("Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net") Signed-off-by:
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